title: Multidetector computed tomography for preoperative evaluation of vascular anatomy in living renal donors.
abstract: BACKGROUND
  Currently, multidetector computed tomographic (MDCT) angiography has become a noninvasive alternative imaging modality to catheter renal angiography for the evaluation of renal vascular anatomy in living renal donors. In this study, we investigated the diagnostic accuracy of 16-slice MDCT in the preoperative assessment of living renal donors.
  
  
  METHODS
  Fifty-nine consecutive living renal donors (32 men, 27 women) underwent MDCT angiography followed by open donor nephrectomy. All MDCT studies were performed by using a 16-slice MDCT scanner with the same protocol consisting of arterial and nephrographic phases followed by conventional abdominal radiography. The MDCT images were assessed retrospectively for the number and branching pattern of the renal arteries and for the number and presence of major or minor variants of the renal veins. The results were compared with open surgical results.
  
  
  RESULTS
  The sensitivity and specificity of MDCT for the detection of anatomic variants of renal arteries including the accessory arteries (n = 9), early arterial branching (n = 7) and major renal venous anomalies including the accessory renal veins (n = 3), late venous confluence (n = 4), circumaortic (n = 2) or retroaortic (n = 3) left renal veins were 100%. However, the sensitivity for identification of minor venous variants was 79%. All of three ureteral duplications were correctly identified at excretory phase conventional abdominal radiography.
  
  
  CONCLUSIONS
  Sixteen-slice MDCT is highly accurate for the identification of anatomic variants of renal arteries and veins. Dual-phase MDCT angiography including arterial and nephrographic phases followed by conventional abdominal radiography enables complete assessment of renal donors without significant increase of radiation dose. However, the evaluation of minor venous variants may be problematic because of their small diameters and poor opacification.
authors.affiliation: Department of Radiology, Türkiye Yüksek Ihtisas Hospital, Ankara, Turkey. aturkvatan@yahoo.com
authors.forename: Aysel
authors.initials: A
authors.lastname: Türkvatan
authors.forename: Serkan
authors.initials: S
authors.lastname: Akinci
authors.forename: Sener
authors.initials: S
authors.lastname: Yildiz
authors.forename: Tülay
authors.initials: T
authors.lastname: Olçer
authors.forename: Turhan
authors.initials: T
authors.lastname: Cumhur
mesh_terms: D000328:Adult; D000792:Angiography; D005260:Female; D006801:Humans; D016030:Kidney Transplantation / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D011300:Preoperative Care; D012077:Renal Artery / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D012082:Renal Veins / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014019:Tissue Donors; D014057:Tomography, X-Ray Computed